SW8990413_Historical File_19990819

State of North Carolina
• Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
Mr. Joe Hearne, Vice -President
Clementree, Inc.
PO Box 22
Kure Beach, NC 28449.
Dear Mr. Hearne:
NPA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL REsouROEs
August 19, 1999
Subject: Permit No. SW8 990413
Kure Estates, Phase III
High Density Subdivision Stormwater Project -
New Hanover County
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Kure Estates, Phase
III on July 8, 1999. Staff review of the plans and specifications has determined that the project, as proposed, will comply
with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 990413,
dated August 19, 1999, for the construction of the project, Kure Estates, Phase III.
This permit shall be effective from the date of issuance until August 19, 2009, and shall be subject to the conditions and
limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit.
Failure to establish an adequate system for operation and maintenance of the stormwater management system will result
in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be
in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding. `'
If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or me at
[phone].
RSS/:sav
cc:
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
S:1WQSISTORivIWAT1PERMIT1990413.AUG
Phil Tripp, P.E.
Tony Roberts, Ncw Hanover County Inspections
Beth Easley, New Hanover County Engineering
Scott Vinson
Wilmington Regional Office
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No. SW8 990413
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 1.43, General Statutes of North Carolina as amended,
and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Clementree, Inc.
Kure Estates, Phase III
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A
NCAC 211.1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management
plans and specifications and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until August 19, 2009 and shall be subject to the
following specified conditions and limitation'
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on
page 3 of this permit, the Project Data Sheet. The subdivision is permitted for 44 lots, each allowed 3,000
square feet of built -upon area.
3. Approved plans and specifications for this proj ect are incorporated by reference and are er_forceable parts
of the permit.
2

State Stormwater'Management Systems
Permit No. SW8 990413
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Name of Receiving Stream / Index #:
Classification of Water Body:
If Class SA, chloride sampling results:
Design Storm:
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Total Impervious Surfaces, ft2:
44lots at3,000 ft2:
Roads/Parking, ft2
Other, ft2
Offsite Area entering Pond, ft2:
Required Surface Area, ft2: .r
Provided Surface Area, ft2:
Required Storage Volume, ft3:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
[VISION OF WATER QUALITY
PROJECT DATA SHEET
Kure Estates, Phase III
SW8 990413
New Hanover County
Mr. Joe Hearne, Vice -President
Clementree, Inc.
PO Box 22
Kure Beach, NC 28449
July 8, 1999
UT Cape Fear River / (CPF17 18-(71))
"SC it
n/a
1"
7.0
11.3
172,960
132,000
r
40,960
n/a
n/a
6,453
8,168
14,497
18,126 .
13.20
1.5"diameter pipe
3

State Stormwater Management Systems
Permit No. SW8 990413
II. SCHEDULE OF COMPLIANCE
1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales)
shown on the approved plans as part of the stormwater management system without submitting a revision
to the permit and receiving approval from the Division.
2. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area. Once the lot transfer is complete, the built -upon area may not be revised without
approval from the Division of Water Quality, and responsibility for meeting the built -upon area limit is
transferred to the individual property owner.
3. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
4. The Director may determine that other revisions to the proj ect should require a modification to the permit.
5. The Director may notify the permittee when the permitted site does not meet one or more ofthe minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a
written time schedule to the Director for modifying the site to meet minimum requirements. The
permittee shall provide copies of revised plans and certification in writing to the Director that the changes
have been made.
6. The stormwater management system shall be constructed in it's entirety, vegetated and operational for
its intended use prior to the construction of any built -upon surface except roads.
7. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
8. The permittee grants permission to DENR Staff to enter the property for the purposes of inspecting the
project for compliance with the conditions of this permit.
9. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation
of this permitted facility, a certification must be received from an appropriate deigner for the system
installed certifying that the permitted facility has been installed in accordance with this -permit, the
approved plans and specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification.
10. Decorative spray fountains will not be allowed in the stormwater treatment system.
11. If the stormwater system was used as an Erosion Control device, it must be restored to design condition
prior to operation as a stormwater treatment device, and prior to occupancy of the facility.
12. Prior to transfer of ownership, the pond must be inspected by DWQ personnel, and determined to be in
compliance with all permit conditions. Records of maintenance activities will be required.
4

State Stormwater Management Systems
Permit No. SW8 990413
13. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
14. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what
actions were taken.
15. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to
the amount as shown on the Project Data Sheet, per Section I, Part 2. The recorded statements must
follow the form:
a. "The maximum built -upon area per lot is 3,000 square feet. This allotted amount includes any
built -upon area constructed within the lot property boundaries, and that portion of the
right-of-way between the front lot line and the edge of the pavement. Built upon area includes,
but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquina, but does
not include raised, open wood decking, or the water surface of swimming pools."
b. "The covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State."
C. "Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the State."
d. "Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their
allowable built -upon area due to CAMA regulations."
"All runoff on the lot must drain into the permitted system. This may be accomplished through
providing roof drain gutters which drain to the street, grading the lot to drain towaid the street,
or grading perimeter swales and. directing them into the pond or street. Lots that naturally drain
into the system are not required to provide these measures."
16. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of
recording the plat, and prior to selling lots. The recorded copy must bear the signature of the Permittee,
the deed book number and page, and stamp/signature of the Register of Deeds.
17. This permit shall become voidable unless the facilities are constructed in accordance with the conditions
of this permit, the approved plans and specifications, and other supporting data.
18. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a
minimum of ten years from the date of the completion of construction.
41

State Stormwater Management Systems
Permit No. SW8 990413
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or
there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the
Division of Water Quality accompanied by appropriate documentation from the parties involved, such
as a copy of the deed of trust. Other supporting materials, such as a signed Operation and Maintenance
plan in the case of engineered systems, will also be required. The project must be in good standing with
DWQ. The approval of this request will be considered on its merits and may or may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the'Permittee from complying with any and all statutes,
rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and
federal) which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for
a permit modification, revocation and reissuance or termination does not stay any permit condition.
6. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours.
Permit issued this the 19th day of August, 1999.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
C .(,-- , ,
�— Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 990413
0

State Stormwater Management Systems
Permit No. SW8 990413
Kure Estates, Phase III
Stormwater Permit No. SW8 990413
New Hanover County
Designer's Certification
Page 1 of 2
I' as a duly
registered in the State of North Carolina, having been authorized to
observe (periodically/weekly/full time) the construction of the project,
ect)
for (Project Owner) hereby state that, to the best of my abilities, due
care and diligence was used in the observation of the.proj ect construction such that the construction was observed
to be built within substantial compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form are a part of this Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
7

State - Stormwater Management Systems
Permit No. SW8 990413
Certification Requirements: Page 2 of 2
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the system.
4. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. - All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the system.
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf, a forebay, and the vegetated filter.
_14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspector

It V005
g
Date Received Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERIVIIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Clementree, Inc.
2. Print Owner/Signing Official's name and title (the person who is legally responsible for the facility and
its compliance):
Joe Hearne Vice -President
3. Mailing Address for person listed in item 2 above:
P.O. Box 22
City: Kure Beach State: NC Zip: 28449
Telephone Number: [phone]
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Kure Estates Phase III
5. Location of Facility (street address):
Kure Village Way
City: Kure Beach County: New Hanover
6. Directions to facility (from nearest major intersection):
Approx. 36501f south from the intersection of US Hwy 421 and SR 1539 toward Ft. Fisher to
Kure Village Way to project entrance
7. Latitude: N 34' 00' 30" Longitude: W 77' 54' 00" of facility
8. Contact person who can answer questions about the facility:
Name: Phillip Tripp Telephone Number: J(910) 763-5100
H. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
2. If this application is being submitted as the result of a renewal or modification to an existing permiL, list
The existing permit number and its issue date (if known)
Form SWU-101 April 1998 Page 1 of 4

3. Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control 404 Permit
III. PROJECT INFORMATION
L In the space provided below, summarize how stormwater will be treated. Also attach a detailed
narrative (one to two pages) describing stormwater management for the project.
stormwater detention pond
2. Stormwater runoff from this project drains to the Ca OL a" River basin.
3. Total Project Area: 8.4 acres 4. Project Built Upon Area: 41. *2;� %.
5. How many drainage basins does the project have? 1
6. Complete the following information for each drainage basin. If there are more than two drainage basins
in the project, attach an additional sheet with the information for each basin provided in the same format
as below.
Receiving Stream Name
a b. (,�t iutr
R
,eceiving Stream Class
cc
Drainage Basin Area
365,904 sf
Existing Impervious * Area
0
Proposed Impervious * Area
74 %P0
% Impervious* Area (total)
hel , $
On -site Buildings 44 1 b 5
2 1 000 s
On -site Streets
0 0
On -site Parkin
0
On -site Sidewalks
0
Other on -site
0
Oil site
0
Total:
E= 1-12 6704
E=
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas sidewalks, gravel areas, etc.
How was the off -site impervious area listed above derived? N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required to he recorded for all low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded.
Form SAT-101 April 1998 page 2 of 4

By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the permit, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. AGENT AUTHORIZATION
If you wish to designate submittal authority to another individual or firm so that they may provide information
on your behalf, please complete this section:
Designated agent (individual or firm): Tripp Engineering, P.C.
Mailing Address: 419 Chestnut Street
City: W' n State: NC Zip: 28401
Phone:__(0 763-5100 Fax: [phone]
VII. SUBMITTAL REQUIREMENTS
This application package will not be accepted by the Division of Water Quality unless all of the applicable
items are included with the submittal.
Please indicate that you have provided the following required information by signing your initials in the
space provided next to each item.
Auulkant's Initials
• Original and one copy of the Stormwater Management Permit Application Form r
• One copy of the applicable Supplement Form(s) for each BMP (see Attachment A) PJ
• Permit application processing fee (see Attachment A)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations
- Details of roads, parking, cul-de-sacs, sidewalks, and curb and gutter
Wetlands delineated, or a note on plans that none exist
Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage basins delineated
Vegetated buffers (where required)
VI. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Joe Hearne
certify that the information included on this permit application form is correct, that the proj ect will be
constructed in conformance with the approved plans, that the deed restrictions in accordance with Attachment A
of this form will be recorded with all required permit conditions, and that to the best of my knowledge, the
proposed project complies with the requirements of 15A NCAC 2H .1000.
Signature:
Title:
Form SWLT-101 April 1998 Page 3 of 4
Dater

ATTACHMENT A
1. Deed Restriction Language
The following statement must be recorded for all low density projects and for all projects that involve the
subdivision and selling of lots or outparcels:
1. No more than 3LQW square feet of any lot, including that portion of the right-of-way between the
edge of pavement and the front lot line, shall be covered by impervious structures including asphalt,
gravel, concrete, brick, stone, slate or similar material but not including wood decking or the
surface of swimming pools. This covenant is intended to insure continued compliance with the
stormwater permit issued by the State of North Carolina. The covenant may not be changed or
deleted without the consent of the State.
2. No one may fill in, pipe, or alter any roadside Swale except as necessary to provide a minimum
driveway crossing.
NOTE: If lot sizes vary significantly, the owner/developer must provide an attachment listing each lot
number, size and the allowable built upon area for each lot.
For commercial projects that have outparcels or future development, the following statements must also be
recorded:
3. The connection from the outparcel or future area into the stormwater system must be made into the
forebay such that short-circuiting of the system does not occur.
4. All built -upon area from the outparcel or future development must be directed into the permitted
stormwater control system.
5. Built -upon area in excess of the permitted amount will require a permit modification prior to
construction.
For curb outlet systems, the following statement in addition to items 1 and 2 above must be recorded:
6. No one may pipe, fill in or alter any designated 100 foot long grassed Swale used to meet the
requirements ofNCAC 2H.1008(g).
2. Supplement Forms
The applicable supplement form(s) listed below must be submitted for each BMP specified for this project:
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Nutrient Management Strategy Supplement
3. Permit Application Fees (check made payable to NCDENR and submitted to the appropriate
Regional Office)
Type of Permit
Low Density
High Density
Other
Director's Certification
General Permit
New, Modification, or
Late Renewal
$225
$385
$225
$350
$ 50
Form SIVIJ-101 April 1998 Page 4 of 4
Timely Renewal Without
Modification
n/a
$225
n/a
n/a
n/a

Permit No. WS
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORM HATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: Kure Estates Phase III
Contact Person: ___Phillip Tripp_Phone Number: ( 910 ) 7635100
For projects with multiple basins, specify which basin this worksheet applies to:
Basin Bottom Elevation
4.3
ft.
Permanent Pool Elevation
11.3
ft.
Temporary Pool Elevation
13.2
ft.
Permanent Pool Surface Area
8.168_
sq.ft.
Drainage Area
_365,904
sq.ft.
Impervious Area
3.97
ac.
Permanent Pool Volume
31.540_
cu.ft.
Temporary Pool Volume
18,126_
cu.ft.
Forebay Volume
6,370
cu.ft.
SA/DAI used
0.019
Diameter of Orifice
1.5
in.
Design TSS Removal
90
%
U. REQUIRED ITEMS CHECKLIST
(average elevation of the floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(surface area to drainage area ratio)
(85% TSS removal required, see item k below)
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(1V.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Form SWU-102 Rev 1/August 1998 Page 1 of 3

Applits Initials
a. The temporary pool controls runoff from the 1 inch storm event.
b. The basin length to width ratio is greater than 3: 1.
c. The basin side slopes above the permanent pool are no steeper than 3:1.
d. A submerged and vegetated perimeter shelf at less than 6:1 is provided (show detail).
e. Vegetation above the permanent pool elevation is specified.
f. An emergency drain is provided to empty the basin.
g. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
h. The temporary pool draws down in 2 to 5 days.
i. A trash rack is provided for both the overflow and orifice.
The forebay volume is approximately equal to 20% of the total basin volume.
Sediment storage is provided in the permanent pool.
A 30-foot vegetative filter is provided at the outlet2 (include erosive flow calculations).
Recorded drainage easement for each basin including access to nearest right-of-way.
A site specific operation and maintenance (O & M) plan is provided.
o. A vegetation management/mowing schedule is provided in the O & M plan.
p. Semi-annual inspections are specified in the O & M plan.
q. A debris check to be performed after every storm event is specified in the O & M plan.
r. Specific clean -out benchmarks are specified in the O & M plan (elevation or depth).
s. A legally responsible party is designated in the O & M plan3 (include name and title).
t. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified to be performed prior to use as a wet detention basin.
Footnotes:
1 When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2 The requirement for a vegetative filter may be waived if the wet detention basin is designed to meet 90% TSS removal.
3 The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
M. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention system is defined as the wet detention basin, forebay, non-integrated pretreatment
Systems (pretreatment other than foreb_a_ys), and the vegetated filter if one is provided.
This system (check one) U does idoes not incorporate a vegetated falter.
This system (check one) ❑ does ®'does not incorporate non-integrated pretreatment.
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
Form SWU-102 Rev 1/August 1998 Page 2 of 3

a. Inspect the wet detention system for sediment accumulation, erosion, trash accumulation, grass
cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
Cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper fianctioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth. Removed sediment shall be disposed of in an appropriate
manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a
wet detention basin or stream, etc.)
The original design depth is: 7'
The sediment removal benchmark depth is: 5.25'
5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These
plants shall be encouraged top grow along the basin perimeter.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent possible.
7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the above
maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the
project, responsible party, or address.
Print name: Clementree Inc. Joe Hearne
Address: P.O. Box 22, Kure Beach, NC 28449
Phone: [phone]
Title:
Signature:
Date:
I, Monica V. Loughi a Notary Public for the State of North Carolina
County of New Hanover , do hereby certify that _Joe Hearne
personally appeared before me this 15+*k day of A ril 19 99 , and acknowledge the
due execution of the forgoing system maintenanc�e��}��nts. Witness my hand and official seal,
My commission expires
Form SW-102 Rev 1/August 1998 Page 3 of 3

TRIPP ENGINEERING, P.C.
41 419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] - FAX: [phone]
July 7, 1999
NCDENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Mr. Scott Vinson
Re: Kure Estates Phase III
TE 98085
Dear Mr. Vinson:
RECCMIVED
J U L 0 8 ?999
;�-
In response to your correspondence dated June 28, 1999 we offer the following:
1. We have shown a 5' drainage easement around the pond.
2. A drainage area to the pond has now been delineated.
3. We have included a note stating all roof drains to be directed to the pond.
4. We have provided a swale on the back of the referenced lots to route drainage to
the pond.
5. These are existing catch basins. The lots that back up to these catch basins will be
graded to drain to the front.
6. Thank you for your correction. The classification is "SC".
Please contact us with questions, or if you require any additional information.
Thank you.
Sincerely,
Tripp Engineering, P.C.
JU6, •
Charles D. Cazier, E.I.
CDC:dcb

Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
June 28, 1999
Mr. Phil Tripp
Tripp Engineering
419 Chestnut Street
Wilmington, NC 28401
TIC
'�w
1.9AWA
6i
19
NCDENii
NORTH CAROUKA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: ACKNOWLEDGEMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 990413
Kure Estates Phase III
New Hanover County
Dear Mr: Tripp:
The Wilmington Regional Office received a Stormwater Management Permit Application for Kure
Estates Phase III on April 15, 1999. A preliminary review of that information has determined that the
application is not complete. The following information is needed to continue the stormwater review:
1. Please locate the pond in a recorded drainage easement.
2. Please delineate the drainage area to the pond.
3. How does the runoff from the back of the lots get into the pond for treatment?
4. How is the runoff from lots 45-52 making its way into the pond to be treated before leaving
the site?
5. There is a 36" CUT running along the back of the lots along the western property line. There
looks to be three catch basins, one each in lots 61, 63, and 68, entering into the 36" pipe.
Please verify as to what these objects are and there purpose.
6. Please re -verify the water body classification submitted. SA was given as the classification
to the unnamed tributary to the Cape Fear River that this site drains to, however SC may be
more like the correct classification though I may be wrong. Let me know as to the re -
verification.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

Mr. Tripp
June 28, 1999
Stormwater Project No. SW8 990413
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to July 28, 1999, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including
the application fee. The Division is allowed 90 days from the receipt of a completed application to issue the
permit.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Scott A. Vinson
Environmental Engineer
RSS/sav: S:\WQS\STORMWAT\ADDINFO\990413.JUN
cc: Wilmington Regional Office
Mr. Joe Hearne, VP- Clementree, Inc.

April 15, 1999
TRIPP ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
N�
NCDENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: Kure Estates Phase III
New Hanover County, NC
TE 98085
Dear Linda:
1 5 1IS99
Enclosed please find two (2) sets of plans, one (1) signed original and one (1)
copy of the application form, one (1) wet detention basin supplement, two (2) sets of
sealed calculations and one check for the application fee.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
a - 44
Phillip G. Tripp, P.E.
IDGT:dcb
Enc.

APR 1 5 1999
BY:
Stormwater Narrative
April 15, 1999
Re: Kure Estates Phase III
New Hanover County
TE 98085
The total drainage area of this subdivision is 8.4 acres. The 8.4 acres is subdivided into
44 lots. Each lot may obtain a built upon area of three thousand square feet. An asphalt
paved area of 40,960 sgft will also be constructed within the total area. Construction of
these impervious surfaces provides a total built upon area of 47.3%.
Stormwater will be handled by wet detention sized to meet the state design criteria.

4114/99
PGT
Total Drains a Area
s . ft.
acres
365,904
8.40
Impervious Area
Land Use
sq. ft.
acres
44 lots Q 3000 SF each
132,000
3.03
arkin /as haft
40,960
0.94
concrete
0
0.00
[Total[Iotal
172,960
3.97
Stormwater calculations:
Time of Concentration:
Hydraulic Length (L) = 400 ft.
change in Height (H) = 2 ft.
Tc = (L3 /H).se5 / 128
6.06 min.
Flow for 2 year, 6 hour Storm (Q2):
QPRE _ (CPRE] x (12) x (Area)
= 12.35 cfs
QPos-r = (CPosT) x (12) x (Area)
29.14 cfs
sou
78
P = 3.30 in. for 2 yr, 6 hr storm
S = 1000/CN - 10
2.82
Depth (D)= [P-(0.2)(S)f / [P+(0.8)(S)]
1.35 in.
Time to Peak Flow:
TP = [(43.5)(D)(Area)] / Qs,Pcsr
16.89 min.
Detention Pond Desian:
Pond Size:
Elevation
ft.)
Surface Area
(sq. ft.
Normal Pool
11.30
8,168
Flood Pool
13.20
10,912
Top of Bank
15.00
13,365
Bottom of Pool
4.30
1,985
Provided Storage Volume:
Vol. _ [(Normal pool SA + Flood Pool SA) / 2]
x (F.P. elev. - N.P. elev.)
- 18,126 cu. ft.
98085POND.xis
KURE ESTATES PHASE III
Stormwater Calculations
Oft
1 of 2
RECEIVED'
APR 15 1999
BY:9Qo41/s
% impervious = 0.473 l
= 47.3% --- --I
say 49.0%
CPRE = 0.25
CPosT = (% imp.)(.95)+(1-% imp.)(.25)
0.59
IZ = 5.88 in/hr
110 = 7.23 in/hr
Flow for 10 year, 6 hour Storm (Q10):
QPRE _ (CPRE) x (110) x (Area)
15.18 cis
QPOST = (CPOsr) x (110) x (Area)
35.83 cis
Sou storage capacity Tor iu year storm:
CN = (98)(% imp.) + (60)(1-% imp.)
78
P = 4.80 in. for 10 yr, 6 hr storm
S = 1000/CN - 10
2.82
Depth (D)= [P-(0.2)(S)]2 / [P+(0.8)(S)]
2.54 in.
Time to Peak Flow:
TP = [(43.5)(D)(Area)] / Q10.P0.5T
25.93 min.
State Surface Area Requirement at normalpool:
Pond side slopes = 3 :1
Depth below N.P. = 7 ft.
SA/DA = 0.0190
(Chart for 90% TSS Removal for Wet Detention
Pond without Vegetative Filter
Required SA = (SAIDA) x (Total Drainage Area)
= 6,952 s . ft.
State Volume Required for Storaae of first 1" of runoff,
Vol._ [(1/12) x (DA) x (% imp.)] +
[(1/12) x (DA) x (1-% imp.) x C]
C = 0.2
= 17,629 cu. ft.
98085

4114/99 KURE ESTATES PHASE III 98085
PGT Stormwater Calculations
Forebav:
Required Volume
Vol. = 20% of Permenant Pond Volume
6,308 cu. ft.
Outlet Structure Design:
Flow for 2-day drawdown:
for 1st 1" of stormwater,
Q = Provided Vol. / 172,800 sec. (2-days)
0.105 cfs
Required Area of Pipe for 2-day drawdown:
A= Q/ [Cd x SQRT(2 x g x h)]
Cd = 0.6
g = 32.2 ft./sZ
h = (F.P. elev.- N.P. elev.) /2
0.95 it.
A = 0.0224 sq. ft.
Diameter of Pipe for 2-day drawdown:
DIA. = SQRT[(A x 4) / pi]
= 0.1687 ft.
= 2.02 in.
Outlet Structure Check:
Using a 6 x 6' Basin,
Perimeter L = 36 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp.)(.25)
0.59
1 = 7.23 in. for a 10 yr. Storm
A = 8.40 Acres
35.83 cfs
Q= Cwxl.xH'-5
H = [Q / (Cw x L)]213
Cw = 3
0.48 ft.
Peak elevation = flood pool elevation + H
= 13.68 ft.
Provided Volume
Normal Pool SA = 2,962 sq. ft.
Bottom Pool SA = 1,285 sq. ft.
Vol. _ [(N.P. SA + B.P. SA) / 21 x (N.P. el. - B.P. el.)
6,371 cu. ft.
depth = 3 ft.
Fiow for 5-day drawdown:
for 1st 1" of stormwater,
Q = Provided Vol. 1432,000 sec. (5-days)
= 0.042 cis
Required Area of Pipe for 5-day drawdown:
A= Q/ [Cd x SQRT(2 x g x h)]
Cd = 0.6
g = 32.2 ft./sZ
h = (F.P. elev. - N.P. elev.) / 2
0.95 ft.
A = 0.0089 sq. ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) / pi]
0.1067 ft.
1.28 in.
98085POND.xis 2 of 2